Effects of Nitrogen on Oxalate Accumulation Mechanisms in Different Spinach Genotypes

Over application N fertilizer is quite common, especially for vegetable in China. Therefore, supported by IPNI China program, the project cooperators in Zhejiang University carried out this research project in recent years to study the negative effect of over application N fertilizer on vegetable quality and yield,

IPNI-2013-CHN-ZJ26

Spinach is widely cultivated and offers better nourishment than many vegetables. However, spinach also contains large amounts of oxalate, which is considered to be not beneficial, or a toxin for humans. Oxalate content differs among genotypes for many crops, but mechanisms behind the genotypic differences of oxalate are far from being understood. Nitrogen is one of the most important factors affecting oxalate accumulation. Read more


Year of initiation:2013
Year of completion:2014
Map:

Interpretive Summary

2014

Spinach is widely cultivated and offers better nourishment than many vegetables. However, spinach also contains large amounts of oxalate, which is considered to be not beneficial, or a toxin for humans. Oxalate content differs among genotypes for many crops, but mechanisms behind the genotypic differences of oxalate are far from being understood. Nitrogen is one of the most important factors affecting oxalate accumulation.

2013

From the agricultural and nutritional point of view, oxalate is regarded as a naturally occurring toxin and anti-nutritional factor. Intake of oxalate-rich vegetables may increase the risk of kidney stone production by inducing a significant increase in urinary oxalate excretion. It is commonly accepted that N nutrition is one of the most important factors affecting oxalate accumulation in vegetable production.



Project Leader

Xianyong Lin, Zhejiang University


Project Cooperators

Yongsong Zhang, Zhejiang University


IPNI Staff

F. Chen


Location

Asia \ Eastern Asia \ CHN \ Zhejiang \ Hangzhou


Topics

4r rate, 4r source, crop quality

spinach

Nitrogen (N)